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@atten gisten getest @ffice JOHN E. PLUMMER, OF BIN GHAMTON, 'NEW YORK.

Letters Patent No. 70,894, dated November 12, 1867.

y IMPROVED EDGE-PLANE.

tlp ttrhule nehmt tu im tigen trtttrs heirat mit mating putt tt its stmt.

TO ALL WHOM IT MAY OONCERN:

Be it known that I, JOHN E. PLUMMER, of Binghamton, in the county of Broome, and State of New York, have invented a new and useful improvement on Edge-Planes for trimming the edges of boots and shoes; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the'same, reference being had to the accompanying drawings, making a part of this specification, in which* Figures 1 and 2 are perspective views, showing the concave and convex cutters.

Figure 3 represents the stock with the cutter-guard and throat detached.

Similar letters of reference indicate corresponding parts in each iigure.

The object of' my improvement is to construct a reversible-edge plane" for trimming the soles of boots and shoes, which shall possess all the qualities requisite to accomplish the object with greater facility and ease, and at the same time to require less attention to keep it in order, than those in common use.

The nature of my invention consists in arranging a cutter on each side kand in the centre of a stock, with a handle at each end. One of the cutters is designed for trimming the forey part of the' sole, und the other for the shank, or that part under the instep, thereby combining in the sume tool a cutter for the front or convex edges, and another for the' shank, or concave edges of the sole. v v

It also consists in the simplicity of its construction and the adaptability of its form to accomplish the odject designed. A j

I construct the stock A and the handles of cast brass, iron, or other suitablc material. In the centre of the stock, I make projections B B on each side of the handles for the cutters G C, which are held in their places` by the guard-plates D D, which are grooved to correspond with those in the stock,`as represented in iig. 3, letters E E. The lower ends of said guard-plates are notched to iit into the shanks of the handles. The-upper ends F F project above the face'of the cutters, and are chamfered to work between the sole and the uppers ofv the boot or shoe, thereby protecting the work from injury. I then drill a hole, G, through the plate and into the stock, tap it, and enter the screw, but before turning it fully down, and while the guard-plate is still slightly loose, I enter the cutter into the grooves E E, and turn up the screw, which holds it securely in posi-V tion. The throat H of the plane is-made of steel, bent vat right angles to the face, fitted between the guard and stock-back of the cutters, and the arm into a recess, I, held in place by a screw. The hole in the arm, through which said screw passes into the stock, is slightly elongated, for the purpose of graduating the shaving of the cutter. The stock A is chamiered down under the cutter and throat for the purpose'of giving clearance te the shavings. The handles of thepl'ane are slightly curved, and connect with the stock opposite, and their upper sides nearly flush with, the face of the plane or cutter on each side, so that when trimming the concave edges of the sole, under the instep the opposite handle will not interfere with the work. One of the cutters is made straight for the purpose of trimming the convex edges of'th-e sole. The other is curved to correspond to the concave edges under the instep.

The convex or fore part of the sole requires a iiner set of the cutter than that of the shank orl concave Y part, consequently manufacturers often use two instruments to accomplish the object rather than be constantly changing the set of -the tool.

I am aware that there are many other arrangements-for a similar purpose, but, so far as I know, there are none involving the combinations of my improvement. I therefore disclaim all interference with others, and confine myself to the novel features of my improvement.

Having thus described' my invention, what I clai'ni, and desire to secure by Letters Patent, is-

'lhe construction and use of a reversible-edge plane, substantially as described and'represented for the tf th. purpose se or JOHNE. PLUMMER.

Witnesses:

`A. El ANDREWS,

JAMES FLYNN. 

